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| author |   Mary Strodl <mstrodl@csh.rit.edu> | 2024-10-09 09:11:31 -0400 |
|---|---|---|
| committer |   Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2024-10-14 09:07:32 +0200 |
| commit | c46a74ff05c0ac76ba11ef21c930c3b447abf31a (patch) | |
| tree | 8df67dc1d35adcee12f79e6832995ef741617518 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | gpio: aspeed: Support G7 Aspeed gpio controller (diff) | |
| download | wireguard-linux-c46a74ff05c0ac76ba11ef21c930c3b447abf31a.tar.xz wireguard-linux-c46a74ff05c0ac76ba11ef21c930c3b447abf31a.zip | |
gpio: add support for FTDI's MPSSE as GPIO
FTDI FT2232H is a USB to GPIO chip. Sealevel produces some devices
with this chip. FT2232H presents itself as a composite device with two
interfaces (each is an "MPSSE"). Each MPSSE has two banks (high and low)
of 8 GPIO each. I believe some MPSSE's have only one bank, but I don't
know how to identify them (I don't have any for testing) and as a result
are unsupported for the time being.
Additionally, this driver provides software polling-based interrupts for
edge detection. For the Sealevel device I have to test with, this works
well because there is hardware debouncing. From talking to Sealevel's
people, this is their preferred way to do edge detection.
Signed-off-by: Mary Strodl <mstrodl@csh.rit.edu>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20241009131131.1618329-1-mstrodl@csh.rit.edu
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions